/*
 * Copyright (c) 2020 - present, Inspur Genersoft Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.inspur.edp.lcm.metadata.core.event;

import com.inspur.edp.lcm.metadata.api.entity.GspMetadata;
import com.inspur.edp.lcm.metadata.api.entity.MetadataProject;
import com.inspur.edp.lcm.metadata.core.MetadataCoreManager;
import com.inspur.edp.lcm.metadata.core.MetadataProjectCoreService;
import com.inspur.edp.lcm.metadata.spi.event.DirEventArgs;
import com.inspur.edp.lcm.metadata.spi.event.DirEventListener;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import org.springframework.util.CollectionUtils;

public class DirEventListenerImpl implements DirEventListener {
    @Override
    public void fireDirDeletingEvent(DirEventArgs args) {
        // 获取目录下的元数据，将id和filename存入字典
        List<GspMetadata> metadataListInDir = MetadataCoreManager.getCurrent().getMetadataList(args.getPath());
        // 目录下无元数据，直接删除。
        if (CollectionUtils.isEmpty(metadataListInDir)) {
            return;
        }

        Map<String, String> filesInDir = new HashMap<>();
        metadataListInDir.forEach(metadata ->
        {
            filesInDir.put(metadata.getHeader().getId(), metadata.getHeader().getFileName());
        });
        // 获取工程下的元数据
        MetadataProject project = MetadataProjectCoreService.getCurrent().getMetadataProjInfo(args.getPath());
        // 非工程文件夹，直接删除
        if (project == null) {
            return;
        }
        List<GspMetadata> metadataListInProject = MetadataCoreManager.getCurrent().getMetadataList(project.getProjectPath());

        // 排除目录下的元数据
        List<GspMetadata> metadataListExclude = metadataListInProject.stream().filter(item -> !filesInDir.containsKey(item.getHeader().getId())).collect(Collectors.toList());

        metadataListExclude.forEach(metadata ->
        {
            metadata.getRefs().forEach(item ->
            {
                if (filesInDir.containsKey(item.getDependentMetadata().getId())) {
                    String message = "元数据" + filesInDir.get(item.getDependentMetadata().getId()) + "被文件夹外的元数据" + metadata.getHeader().getFileName() + "依赖，请清除其中依赖后重试。";
                    throw new RuntimeException(message);
                }
            });
        });
    }

    @Override
    public void fireDirDeletedEvent(DirEventArgs args) {
        MetadataCoreManager.getCurrent().removeMetadataListCache(args.getPath());
    }
}
